Steps
- Note that the most common unit of measuring angles is by degrees. This is notated by a small "o" figure written in superscript at the top of the number of degrees, so sixty degrees is written 60º. Another common unit used is radians, notated by ?, the Greek letter pi.
- Understand what circle is. A circle starts from 0º and ends at 360º. Thus, there are 360 degrees in a circle.
- A straight angle is formed by placing a line across a circle - the diameter of a circle then is 180º.
- Understand that a right angle is 90º. This is formed when two lines meet perpendicularly.
- Learn the other terminology relevant to angles.
- Acute angle - more than 0º but less than 90º
- Obtuse angle - more than 90º, less than 180º
- Reflex angle - more than 180º, less than 360º
- Note finally that where two straight lines meet together, it's called a vertex of an angle.
Tips
- You can use a protractor to get a sense of other angles by drawing the angles following the protractor's indicators on paper.
Warnings
- This is a very basic introduction to angles. There is much more to learn regarding measurements, and just learning this does not make you understand how to use the measurements.
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